WO2024230331A1 - Indication d'état d'indicateur de configuration de transmission unifié - Google Patents

Indication d'état d'indicateur de configuration de transmission unifié Download PDF

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Publication number
WO2024230331A1
WO2024230331A1 PCT/CN2024/082924 CN2024082924W WO2024230331A1 WO 2024230331 A1 WO2024230331 A1 WO 2024230331A1 CN 2024082924 W CN2024082924 W CN 2024082924W WO 2024230331 A1 WO2024230331 A1 WO 2024230331A1
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WIPO (PCT)
Prior art keywords
csi
srs
resource
unified
signaling
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PCT/CN2024/082924
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English (en)
Inventor
Fang Yuan
Yan Zhou
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Qualcomm Inc
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Qualcomm Inc
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Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Priority to EP24802619.7A priority Critical patent/EP4710500A1/fr
Priority to CN202480029406.4A priority patent/CN121058194A/zh
Publication of WO2024230331A1 publication Critical patent/WO2024230331A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for unified transmission configuration indicator (TCI) state indication.
  • TCI transmission configuration indicator
  • Wireless communications systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcasts, or other similar types of services. These wireless communications systems may employ multiple-access technologies capable of supporting communications with multiple users by sharing available wireless communications system resources with those users.
  • wireless communications systems have made great technological advancements over many years, challenges still exist. For example, complex and dynamic environments can still attenuate or block signals between wireless transmitters and wireless receivers. Accordingly, there is a continuous desire to improve the technical performance of wireless communications systems, including, for example: improving speed and data carrying capacity of communications, improving efficiency of the use of shared communications mediums, reducing power used by transmitters and receivers while performing communications, improving reliability of wireless communications, avoiding redundant transmissions and/or receptions and related processing, improving the coverage area of wireless communications, increasing the number and types of devices that can access wireless communications systems, increasing the ability for different types of devices to intercommunicate, increasing the number and type of wireless communications mediums available for use, and the like. Consequently, there exists a need for further improvements in wireless communications systems to overcome the aforementioned technical challenges and others.
  • One aspect provides a method for wireless communications at a user equipment (UE) .
  • the method includes receiving first signaling configuring the UE for non-coherent joint transmission (NCJT) channel state information (CSI) reporting with at least first and second CSI reference signal (CSI-RS) resources; receiving second signaling that indicates at least two unified Transmission Configuration Indicator (TCI) states; generating CSI by applying a first of the unified TCI states to the first CSI-RS resource and by applying a second of the unified TCI states to the second CSI-RS resource; and transmitting a report conveying the CSI.
  • NCI non-coherent joint transmission
  • CSI-RS CSI reference signal
  • TCI Transmission Configuration Indicator
  • the method includes transmitting first signaling configuring a user equipment (UE) for non-coherent joint transmission (NCJT) channel state information (CSI) reporting with at least first and second CSI reference signal (CSI-RS) resources; transmitting second signaling that indicates at least two unified Transmission Configuration Indicator (TCI) states; and receiving a report conveying CSI generated by the UE, based on CSI-RS transmitted in accordance with the second signaling.
  • NCPJT non-coherent joint transmission
  • CSI-RS channel state information
  • TCI Transmission Configuration Indicator
  • the method includes receiving first signaling configuring the UE for non-coherent joint transmission (NCJT) sounding reference signal (SRS) transmission with at least first and second SRS resources; receiving second signaling that indicates at least two unified Transmission Configuration Indicator (TCI) states; and transmitting SRS by applying a first of the unified TCI states when transmitting SRS on the first SRS resource and by applying a second of the unified TCI states when transmitting SRS on the second SRS resource.
  • NJT non-coherent joint transmission
  • SRS sounding reference signal
  • TCI Transmission Configuration Indicator
  • the method includes transmitting first signaling configuring a user equipment (UE) for non-coherent joint transmission (NCJT) sounding reference signal (SRS) transmission with at least first and second SRS resources; transmitting second signaling that indicates at least two unified Transmission Configuration Indicator (TCI) states; and receiving SRS by applying a first of the unified TCI states when receiving SRS on the first SRS resource and by applying a second of the unified TCI states when receiving SRS on the second SRS resource.
  • NJT non-coherent joint transmission
  • SRS sounding reference signal
  • TCI Transmission Configuration Indicator
  • an apparatus operable, configured, or otherwise adapted to perform any one or more of the aforementioned methods and/or those described elsewhere herein; a non-transitory, computer-readable media comprising instructions that, when executed by a processor of an apparatus, cause the apparatus to perform the aforementioned methods as well as those described elsewhere herein; a computer program product embodied on a computer-readable storage medium comprising code for performing the aforementioned methods as well as those described elsewhere herein; and/or an apparatus comprising means for performing the aforementioned methods as well as those described elsewhere herein.
  • an apparatus may comprise a processing system, a device with a processing system, or processing systems cooperating over one or more networks.
  • FIG. 1 depicts an example wireless communications network.
  • FIG. 2 depicts an example disaggregated base station architecture.
  • FIG. 3 depicts aspects of an example base station and an example user equipment.
  • FIGS. 4A, 4B, 4C, and 4D depict various example aspects of data structures for a wireless communications network.
  • FIG. 5 illustrates example single downlink control information (single-DCI) multi transmission reception point (multi-TRP) scenario.
  • FIG. 6 illustrates an example multi-DCI multi-TRP (mTRP) scenario.
  • FIG. 7 illustrates example scenario of a physical downlink control channel (PDCCH) transmission from multiple TRPs based on a single frequency network (SFN) transmission.
  • PDCCH physical downlink control channel
  • SFN single frequency network
  • FIG. 8 depicts example spatial division multiplexed (SDM) based non-coherent joint transmission (NCJT) and CJT.
  • FIG. 9 depicts example CJT and NCJT scenarios.
  • FIG. 10 depicts an example scenario involving mTRP operation.
  • FIG. 11 depicts example resource allocations for an example scenario involving mTRP operation.
  • FIGS. 12A and 12B depict an example scenario involving mTRP operation.
  • FIG. 13 depicts a call flow diagram, in accordance with certain aspects of the present disclosure.
  • FIG. 14 depicts a call flow diagram, in accordance with certain aspects of the present disclosure.
  • FIG. 15 depicts a method for wireless communications.
  • FIG. 16 depicts a method for wireless communications.
  • FIG. 17 depicts a method for wireless communications.
  • FIG. 18 depicts a method for wireless communications.
  • FIG. 19 depicts aspects of an example communications device.
  • aspects of the present disclosure provide apparatuses, methods, processing systems, and computer-readable mediums for unified transmission configuration indicator (TCI) state indication.
  • TCI transmission configuration indicator
  • a unified TCI state may indicate, to a user equipment (UE) , a common beam applicable to multiple DL/UL channels.
  • UE user equipment
  • a unified TCI state may be applied for a CSI-RS, a CORESET, and a PDSCH.
  • a common beam may also be applied for uplink channels/signals (e.g., a PUSCH, a dedicated PUCCH, and/or an SRS) , depending on how the UE is configured.
  • a UE may communicate with multiple transmission reception points (TRPs) .
  • TRPs transmission reception points
  • the unified TCI framework may be extended to multiple TRP (mTRP) operation.
  • different TCI states may be applied for transmissions to the different TRPs.
  • a UE may be configured with first and second unified TCI states. Unfortunately, there may be some ambiguity regarding which unified TCI state the UE should apply for which TRP.
  • such ambiguity may exist when a UE is configured for unified TCI indication for channel state information (CSI) reference signals (RS) configured for noncoherent joint transmission (NCJT) and sounding RS (SRS) for mTRP operation.
  • CSI-RS channel state information
  • NCJT noncoherent joint transmission
  • SRS sounding RS
  • one CSI resource set may be configured with two resource groups, which may be intended for different transmission reception point (TRPs) . It may not be clear to the UE which unified TCI state to apply to which resource group or resource set.
  • aspects of the present disclosure may provide various mechanisms that may help resolve this ambiguity.
  • the mechanisms may help to determine which unified TCI states are to be applied to two groups in a CSI resource set.
  • the mechanisms may help to determine which unified TCI states are to be applied when two SRS resource sets are configured for different TRPs.
  • the mechanisms proposed herein may provide various advantages. For example, the mechanisms proposed herein may provide flexibility in expanding unified TCI framework to mTRP operation, providing enhanced performance with reduced signaling overhead.
  • FIG. 1 depicts an example of a wireless communications network 100, in which aspects described herein may be implemented.
  • wireless communications network 100 includes various network entities (alternatively, network elements or network nodes) .
  • a network entity is generally a communications device and/or a communications function performed by a communications device (e.g., a user equipment (UE) , a base station (BS) , a component of a BS, a server, etc. ) .
  • a communications device e.g., a user equipment (UE) , a base station (BS) , a component of a BS, a server, etc.
  • UE user equipment
  • BS base station
  • a component of a BS a component of a BS
  • server a server
  • wireless communications network 100 includes terrestrial aspects, such as ground-based network entities (e.g., BSs 102) , and non-terrestrial aspects, such as satellite 140 and aircraft 145, which may include network entities on-board (e.g., one or more BSs) capable of communicating with other network elements (e.g., terrestrial BSs) and user equipments.
  • terrestrial aspects such as ground-based network entities (e.g., BSs 102)
  • non-terrestrial aspects such as satellite 140 and aircraft 145
  • network entities on-board e.g., one or more BSs
  • other network elements e.g., terrestrial BSs
  • wireless communications network 100 includes BSs 102, UEs 104, and one or more core networks, such as an Evolved Packet Core (EPC) 160 and 5G Core (5GC) network 190, which interoperate to provide communications services over various communications links, including wired and wireless links.
  • EPC Evolved Packet Core
  • 5GC 5G Core
  • FIG. 1 depicts various example UEs 104, which may more generally include: a cellular phone, smart phone, session initiation protocol (SIP) phone, laptop, personal digital assistant (PDA) , satellite radio, global positioning system, multimedia device, video device, digital audio player, camera, game console, tablet, smart device, wearable device, vehicle, electric meter, gas pump, large or small kitchen appliance, healthcare device, implant, sensor/actuator, display, internet of things (IoT) devices, always on (AON) devices, edge processing devices, or other similar devices.
  • IoT internet of things
  • AON always on
  • edge processing devices or other similar devices.
  • UEs 104 may also be referred to more generally as a mobile device, a wireless device, a wireless communications device, a station, a mobile station, a subscriber station, a mobile subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a remote device, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, and others.
  • the BSs 102 wirelessly communicate with (e.g., transmit signals to or receive signals from) UEs 104 via communications links 120.
  • the communications links 120 between BSs 102 and UEs 104 may include uplink (UL) (also referred to as reverse link) transmissions from a UE 104 to a BS 102 and/or downlink (DL) (also referred to as forward link) transmissions from a BS 102 to a UE 104.
  • UL uplink
  • DL downlink
  • the communications links 120 may use multiple-input and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and/or transmit diversity in various aspects.
  • MIMO multiple-input and multiple-output
  • BSs 102 may generally include: a NodeB, enhanced NodeB (eNB) , next generation enhanced NodeB (ng-eNB) , next generation NodeB (gNB or gNodeB) , access point, base transceiver station, radio base station, radio transceiver, transceiver function, transmission reception point, and/or others.
  • Each of BSs 102 may provide communications coverage for a respective geographic coverage area 110, which may sometimes be referred to as a cell, and which may overlap in some cases (e.g., small cell 102’ may have a coverage area 110’ that overlaps the coverage area 110 of a macro cell) .
  • a BS may, for example, provide communications coverage for a macro cell (covering relatively large geographic area) , a pico cell (covering relatively smaller geographic area, such as a sports stadium) , a femto cell (relatively smaller geographic area (e.g., a home) ) , and/or other types of cells.
  • BSs 102 are depicted in various aspects as unitary communications devices, BSs 102 may be implemented in various configurations.
  • one or more components of a base station may be disaggregated, including a central unit (CU) , one or more distributed units (DUs) , one or more radio units (RUs) , a Near-Real Time (Near-RT) RAN Intelligent Controller (RIC) , or a Non-Real Time (Non-RT) RIC, to name a few examples.
  • CU central unit
  • DUs distributed units
  • RUs radio units
  • RIC Near-Real Time
  • Non-RT Non-Real Time
  • a base station may be virtualized.
  • a base station e.g., BS 102
  • BS 102 may include components that are located at a single physical location or components located at various physical locations.
  • a base station includes components that are located at various physical locations
  • the various components may each perform functions such that, collectively, the various components achieve functionality that is similar to a base station that is located at a single physical location.
  • a base station including components that are located at various physical locations may be referred to as a disaggregated radio access network architecture, such as an Open RAN (O-RAN) or Virtualized RAN (VRAN) architecture.
  • FIG. 2 depicts and describes an example disaggregated base station architecture.
  • Different BSs 102 within wireless communications network 100 may also be configured to support different radio access technologies, such as 3G, 4G, and/or 5G.
  • BSs 102 configured for 4G LTE may interface with the EPC 160 through first backhaul links 132 (e.g., an S1 interface) .
  • BSs 102 configured for 5G e.g., 5G NR or Next Generation RAN (NG-RAN)
  • 5G e.g., 5G NR or Next Generation RAN (NG-RAN)
  • BSs 102 may communicate directly or indirectly (e.g., through the EPC 160 or 5GC 190) with each other over third backhaul links 134 (e.g., X2 interface) , which may be wired or wireless.
  • third backhaul links 134 e.g., X2 interface
  • Wireless communications network 100 may subdivide the electromagnetic spectrum into various classes, bands, channels, or other features. In some aspects, the subdivision is provided based on wavelength and frequency, where frequency may also be referred to as a carrier, a subcarrier, a frequency channel, a tone, or a subband.
  • frequency may also be referred to as a carrier, a subcarrier, a frequency channel, a tone, or a subband.
  • 3GPP currently defines Frequency Range 1 (FR1) as including 410 MHz –7125 MHz, which is often referred to (interchangeably) as “Sub-6 GHz” .
  • FR2 Frequency Range 2
  • mmW millimeter wave
  • a base station configured to communicate using mmWave/near mmWave radio frequency bands may utilize beamforming (e.g., 182) with a UE (e.g., 104) to improve path loss and range.
  • beamforming e.g., 182
  • UE e.g., 104
  • the communications links 120 between BSs 102 and, for example, UEs 104 may be through one or more carriers, which may have different bandwidths (e.g., 5, 10, 15, 20, 100, 400, and/or other MHz) , and which may be aggregated in various aspects. Carriers may or may not be adjacent to each other. Allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL than for UL) .
  • BS 180 and the UE 104 may each include a plurality of antennas, such as antenna elements, antenna panels, and/or antenna arrays to facilitate the beamforming.
  • BS 180 may transmit a beamformed signal to UE 104 in one or more transmit directions 182’.
  • UE 104 may receive the beamformed signal from the BS 180 in one or more receive directions 182”.
  • UE 104 may also transmit a beamformed signal to the BS 180 in one or more transmit directions 182”.
  • BS 180 may also receive the beamformed signal from UE 104 in one or more receive directions 182’. BS 180 and UE 104 may then perform beam training to determine the best receive and transmit directions for each of BS 180 and UE 104. Notably, the transmit and receive directions for BS 180 may or may not be the same. Similarly, the transmit and receive directions for UE 104 may or may not be the same.
  • Wireless communications network 100 further includes a Wi-Fi AP 150 in communication with Wi-Fi stations (STAs) 152 via communications links 154 in, for example, a 2.4 GHz and/or 5 GHz unlicensed frequency spectrum.
  • STAs Wi-Fi stations
  • D2D communications link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH) , a physical sidelink discovery channel (PSDCH) , a physical sidelink shared channel (PSSCH) , a physical sidelink control channel (PSCCH) , and/or a physical sidelink feedback channel (PSFCH) .
  • sidelink channels such as a physical sidelink broadcast channel (PSBCH) , a physical sidelink discovery channel (PSDCH) , a physical sidelink shared channel (PSSCH) , a physical sidelink control channel (PSCCH) , and/or a physical sidelink feedback channel (PSFCH) .
  • PSBCH physical sidelink broadcast channel
  • PSDCH physical sidelink discovery channel
  • PSSCH physical sidelink shared channel
  • PSCCH physical sidelink control channel
  • FCH physical sidelink feedback channel
  • EPC 160 may include various functional components, including: a Mobility Management Entity (MME) 162, other MMEs 164, a Serving Gateway 166, a Multimedia Broadcast Multicast Service (MBMS) Gateway 168, a Broadcast Multicast Service Center (BM-SC) 170, and/or a Packet Data Network (PDN) Gateway 172, such as in the depicted example.
  • MME 162 may be in communication with a Home Subscriber Server (HSS) 174.
  • HSS Home Subscriber Server
  • MME 162 is the control node that processes the signaling between the UEs 104 and the EPC 160.
  • MME 162 provides bearer and connection management.
  • IP Internet protocol
  • Serving Gateway 166 which itself is connected to PDN Gateway 172.
  • PDN Gateway 172 provides UE IP address allocation as well as other functions.
  • PDN Gateway 172 and the BM-SC 170 are connected to IP Services 176, which may include, for example, the Internet, an intranet, an IP Multimedia Subsystem (IMS) , a Packet Switched (PS) streaming service, and/or other IP services.
  • IMS IP Multimedia Subsystem
  • PS Packet Switched
  • BM-SC 170 may provide functions for MBMS user service provisioning and delivery.
  • BM-SC 170 may serve as an entry point for content provider MBMS transmission, may be used to authorize and initiate MBMS Bearer Services within a public land mobile network (PLMN) , and/or may be used to schedule MBMS transmissions.
  • PLMN public land mobile network
  • MBMS Gateway 168 may be used to distribute MBMS traffic to the BSs 102 belonging to a Multicast Broadcast Single Frequency Network (MBSFN) area broadcasting a particular service, and/or may be responsible for session management (start/stop) and for collecting eMBMS related charging information.
  • MMSFN Multicast Broadcast Single Frequency Network
  • 5GC 190 may include various functional components, including: an Access and Mobility Management Function (AMF) 192, other AMFs 193, a Session Management Function (SMF) 194, and a User Plane Function (UPF) 195.
  • AMF 192 may be in communication with Unified Data Management (UDM) 196.
  • UDM Unified Data Management
  • AMF 192 is a control node that processes signaling between UEs 104 and 5GC 190.
  • AMF 192 provides, for example, quality of service (QoS) flow and session management.
  • QoS quality of service
  • IP Internet protocol
  • UPF 195 which is connected to the IP Services 197, and which provides UE IP address allocation as well as other functions for 5GC 190.
  • IP Services 197 may include, for example, the Internet, an intranet, an IMS, a PS streaming service, and/or other IP services.
  • a network entity or network node can be implemented as an aggregated base station, as a disaggregated base station, a component of a base station, an integrated access and backhaul (IAB) node, a relay node, a sidelink node, to name a few examples.
  • IAB integrated access and backhaul
  • FIG. 2 depicts an example disaggregated base station 200 architecture.
  • the disaggregated base station 200 architecture may include one or more central units (CUs) 210 that can communicate directly with a core network 220 via a backhaul link, or indirectly with the core network 220 through one or more disaggregated base station units (such as a Near-Real Time (Near-RT) RAN Intelligent Controller (RIC) 225 via an E2 link, or a Non-Real Time (Non-RT) RIC 215 associated with a Service Management and Orchestration (SMO) Framework 205, or both) .
  • a CU 210 may communicate with one or more distributed units (DUs) 230 via respective midhaul links, such as an F1 interface.
  • DUs distributed units
  • the DUs 230 may communicate with one or more radio units (RUs) 240 via respective fronthaul links.
  • the RUs 240 may communicate with respective UEs 104 via one or more radio frequency (RF) access links.
  • RF radio frequency
  • the UE 104 may be simultaneously served by multiple RUs 240.
  • Each of the units may include one or more interfaces or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium.
  • Each of the units, or an associated processor or controller providing instructions to the communications interfaces of the units can be configured to communicate with one or more of the other units via the transmission medium.
  • the units can include a wired interface configured to receive or transmit signals over a wired transmission medium to one or more of the other units.
  • the units can include a wireless interface, which may include a receiver, a transmitter or transceiver (such as a radio frequency (RF) transceiver) , configured to receive or transmit signals, or both, over a wireless transmission medium to one or more of the other units.
  • a wireless interface which may include a receiver, a transmitter or transceiver (such as a radio frequency (RF) transceiver) , configured to receive or transmit signals, or both, over a wireless transmission medium to one or more of the other units.
  • RF radio frequency
  • the CU 210 may host one or more higher layer control functions.
  • control functions can include radio resource control (RRC) , packet data convergence protocol (PDCP) , service data adaptation protocol (SDAP) , or the like.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • SDAP service data adaptation protocol
  • Each control function can be implemented with an interface configured to communicate signals with other control functions hosted by the CU 210.
  • the CU 210 may be configured to handle user plane functionality (e.g., Central Unit –User Plane (CU-UP) ) , control plane functionality (e.g., Central Unit –Control Plane (CU-CP) ) , or a combination thereof.
  • the CU 210 can be logically split into one or more CU-UP units and one or more CU-CP units.
  • the CU-UP unit can communicate bidirectionally with the CU-CP unit via an interface, such as the E1 interface when implemented in an O-RAN configuration.
  • the CU 210 can be implemented to communicate with the DU 230, as necessary, for network control and signaling.
  • the DU 230 may correspond to a logical unit that includes one or more base station functions to control the operation of one or more RUs 240.
  • the DU 230 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, or the like) depending, at least in part, on a functional split, such as those defined by the 3 rd Generation Partnership Project (3GPP) .
  • the DU 230 may further host one or more low PHY layers. Each layer (or module) can be implemented with an interface configured to communicate signals with other layers (and modules) hosted by the DU 230, or with the control functions hosted by the CU 210.
  • Lower-layer functionality can be implemented by one or more RUs 240.
  • an RU 240 controlled by a DU 230, may correspond to a logical node that hosts RF processing functions, or low-PHY layer functions (such as performing fast Fourier transform (FFT) , inverse FFT (iFFT) , digital beamforming, physical random access channel (PRACH) extraction and filtering, or the like) , or both, based at least in part on the functional split, such as a lower layer functional split.
  • the RU (s) 240 can be implemented to handle over the air (OTA) communications with one or more UEs 104.
  • OTA over the air
  • real-time and non-real-time aspects of control and user plane communications with the RU (s) 240 can be controlled by the corresponding DU 230.
  • this configuration can enable the DU (s) 230 and the CU 210 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.
  • the SMO Framework 205 may be configured to support RAN deployment and provisioning of non-virtualized and virtualized network elements.
  • the SMO Framework 205 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements which may be managed via an operations and maintenance interface (such as an O1 interface) .
  • the SMO Framework 205 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 290) to perform network element life cycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an O2 interface) .
  • a cloud computing platform such as an open cloud (O-Cloud) 290
  • network element life cycle management such as to instantiate virtualized network elements
  • a cloud computing platform interface such as an O2 interface
  • Such virtualized network elements can include, but are not limited to, CUs 210, DUs 230, RUs 240 and Near-RT RICs 225.
  • the SMO Framework 205 can communicate with a hardware aspect of a 4G RAN, such as an open eNB (O-eNB) 211, via an O1 interface. Additionally, in some implementations, the SMO Framework 205 can communicate directly with one or more RUs 240 via an O1 interface.
  • the SMO Framework 205 also may include a Non-RT RIC 215 configured to support functionality of the SMO Framework 205.
  • the Non-RT RIC 215 may be configured to include a logical function that enables non-real-time control and optimization of RAN elements and resources, Artificial Intelligence/Machine Learning (AI/ML) workflows including model training and updates, or policy-based guidance of applications/features in the Near-RT RIC 225.
  • the Non-RT RIC 215 may be coupled to or communicate with (such as via an A1 interface) the Near- RT RIC 225.
  • the Near-RT RIC 225 may be configured to include a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions over an interface (such as via an E2 interface) connecting one or more CUs 210, one or more DUs 230, or both, as well as an O-eNB, with the Near-RT RIC 225.
  • the Non-RT RIC 215 may receive parameters or external enrichment information from external servers. Such information may be utilized by the Near-RT RIC 225 and may be received at the SMO Framework 205 or the Non-RT RIC 215 from non-network data sources or from network functions. In some examples, the Non-RT RIC 215 or the Near-RT RIC 225 may be configured to tune RAN behavior or performance. For example, the Non-RT RIC 215 may monitor long-term trends and patterns for performance and employ AI/ML models to perform corrective actions through the SMO Framework 205 (such as reconfiguration via O1) or via creation of RAN management policies (such as A1 policies) .
  • SMO Framework 205 such as reconfiguration via O1
  • A1 policies such as A1 policies
  • FIG. 3 depicts aspects of an example BS 102 and a UE 104.
  • BS 102 includes various processors (e.g., 320, 330, 338, and 340) , antennas 334a-t (collectively 334) , transceivers 332a-t (collectively 332) , which include modulators and demodulators, and other aspects, which enable wireless transmission of data (e.g., data source 312) and wireless reception of data (e.g., data sink 339) .
  • BS 102 may send and receive data between BS 102 and UE 104.
  • BS 102 includes controller/processor 340, which may be configured to implement various functions described herein related to wireless communications.
  • UE 104 includes various processors (e.g., 358, 364, 366, and 380) , antennas 352a-r (collectively 352) , transceivers 354a-r (collectively 354) , which include modulators and demodulators, and other aspects, which enable wireless transmission of data (e.g., retrieved from data source 362) and wireless reception of data (e.g., provided to data sink 360) .
  • UE 104 includes controller/processor 380, which may be configured to implement various functions described herein related to wireless communications.
  • BS 102 includes a transmit processor 320 that may receive data from a data source 312 and control information from a controller/processor 340.
  • the control information may be for the physical broadcast channel (PBCH) , physical control format indicator channel (PCFICH) , physical HARQ indicator channel (PHICH) , physical downlink control channel (PDCCH) , group common PDCCH (GC PDCCH) , and/or others.
  • the data may be for the physical downlink shared channel (PDSCH) , in some examples.
  • Transmit processor 320 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively. Transmit processor 320 may also generate reference symbols, such as for the primary synchronization signal (PSS) , secondary synchronization signal (SSS) , PBCH demodulation reference signal (DMRS) , and channel state information reference signal (CSI-RS) .
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • DMRS PBCH demodulation reference signal
  • CSI-RS channel state information reference signal
  • Transmit (TX) multiple-input multiple-output (MIMO) processor 330 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, and/or the reference symbols, if applicable, and may provide output symbol streams to the modulators (MODs) in transceivers 332a-332t.
  • Each modulator in transceivers 332a-332t may process a respective output symbol stream to obtain an output sample stream.
  • Each modulator may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal.
  • Downlink signals from the modulators in transceivers 332a-332t may be transmitted via the antennas 334a-334t, respectively.
  • UE 104 In order to receive the downlink transmission, UE 104 includes antennas 352a-352r that may receive the downlink signals from the BS 102 and may provide received signals to the demodulators (DEMODs) in transceivers 354a-354r, respectively.
  • Each demodulator in transceivers 354a-354r may condition (e.g., filter, amplify, downconvert, and digitize) a respective received signal to obtain input samples.
  • Each demodulator may further process the input samples to obtain received symbols.
  • MIMO detector 356 may obtain received symbols from all the demodulators in transceivers 354a-354r, perform MIMO detection on the received symbols if applicable, and provide detected symbols.
  • Receive processor 358 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 104 to a data sink 360, and provide decoded control information to a controller/processor 380.
  • UE 104 further includes a transmit processor 364 that may receive and process data (e.g., for the PUSCH) from a data source 362 and control information (e.g., for the physical uplink control channel (PUCCH) ) from the controller/processor 380. Transmit processor 364 may also generate reference symbols for a reference signal (e.g., for the sounding reference signal (SRS) ) . The symbols from the transmit processor 364 may be precoded by a TX MIMO processor 366 if applicable, further processed by the modulators in transceivers 354a-354r (e.g., for SC-FDM) , and transmitted to BS 102.
  • data e.g., for the PUSCH
  • control information e.g., for the physical uplink control channel (PUCCH)
  • Transmit processor 364 may also generate reference symbols for a reference signal (e.g., for the sounding reference signal (SRS) ) .
  • the symbols from the transmit processor 364 may
  • the uplink signals from UE 104 may be received by antennas 334a-t, processed by the demodulators in transceivers 332a-332t, detected by a MIMO detector 336 if applicable, and further processed by a receive processor 338 to obtain decoded data and control information sent by UE 104.
  • Receive processor 338 may provide the decoded data to a data sink 339 and the decoded control information to the controller/processor 340.
  • Memories 342 and 382 may store data and program codes for BS 102 and UE 104, respectively.
  • Scheduler 344 may schedule UEs for data transmission on the downlink and/or uplink.
  • BS 102 may be described as transmitting and receiving various types of data associated with the methods described herein.
  • “transmitting” may refer to various mechanisms of outputting data, such as outputting data from data source 312, scheduler 344, memory 342, transmit processor 320, controller/processor 340, TX MIMO processor 330, transceivers 332a-t, antenna 334a-t, and/or other aspects described herein.
  • “receiving” may refer to various mechanisms of obtaining data, such as obtaining data from antennas 334a-t, transceivers 332a-t, RX MIMO detector 336, controller/processor 340, receive processor 338, scheduler 344, memory 342, and/or other aspects described herein.
  • UE 104 may likewise be described as transmitting and receiving various types of data associated with the methods described herein.
  • transmitting may refer to various mechanisms of outputting data, such as outputting data from data source 362, memory 382, transmit processor 364, controller/processor 380, TX MIMO processor 366, transceivers 354a-t, antenna 352a-t, and/or other aspects described herein.
  • receiving may refer to various mechanisms of obtaining data, such as obtaining data from antennas 352a-t, transceivers 354a-t, RX MIMO detector 356, controller/processor 380, receive processor 358, memory 382, and/or other aspects described herein.
  • a processor may be configured to perform various operations, such as those associated with the methods described herein, and transmit (output) to or receive (obtain) data from another interface that is configured to transmit or receive, respectively, the data.
  • FIGS. 4A, 4B, 4C, and 4D depict aspects of data structures for a wireless communications network, such as wireless communications network 100 of FIG. 1.
  • FIG. 4A is a diagram 400 illustrating an example of a first subframe within a 5G (e.g., 5G NR) frame structure
  • FIG. 4B is a diagram 430 illustrating an example of DL channels within a 5G subframe
  • FIG. 4C is a diagram 450 illustrating an example of a second subframe within a 5G frame structure
  • FIG. 4D is a diagram 480 illustrating an example of UL channels within a 5G subframe.
  • Wireless communications systems may utilize orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) on the uplink and downlink. Such systems may also support half-duplex operation using time division duplexing (TDD) .
  • OFDM and single-carrier frequency division multiplexing (SC-FDM) partition the system bandwidth (e.g., as depicted in FIGS. 4B and 4D) into multiple orthogonal subcarriers. Each subcarrier may be modulated with data. Modulation symbols may be sent in the frequency domain with OFDM and/or in the time domain with SC-FDM.
  • a wireless communications frame structure may be frequency division duplex (FDD) , in which, for a particular set of subcarriers, subframes within the set of subcarriers are dedicated for either DL or UL.
  • Wireless communications frame structures may also be time division duplex (TDD) , in which, for a particular set of subcarriers, subframes within the set of subcarriers are dedicated for both DL and UL.
  • FDD frequency division duplex
  • TDD time division duplex
  • the wireless communications frame structure is TDD where D is DL, U is UL, and X is flexible for use between DL/UL.
  • UEs may be configured with a slot format through a received slot format indicator (SFI) (dynamically through DL control information (DCI) , or semi-statically/statically through radio resource control (RRC) signaling) .
  • SFI received slot format indicator
  • DCI DL control information
  • RRC radio resource control
  • a 10 ms frame is divided into 10 equally sized 1 ms subframes.
  • Each subframe may include one or more time slots.
  • each slot may include 7 or 14 symbols, depending on the slot format.
  • Subframes may also include mini-slots, which generally have fewer symbols than an entire slot.
  • Other wireless communications technologies may have a different frame structure and/or different channels.
  • the number of slots within a subframe is based on a slot configuration and a numerology. For example, for slot configuration 0, different numerologies ( ⁇ ) 0 to 5 allow for 1, 2, 4, 8, 16, and 32 slots, respectively, per subframe. For slot configuration 1, different numerologies 0 to 2 allow for 2, 4, and 8 slots, respectively, per subframe. Accordingly, for slot configuration 0 and numerology ⁇ , there are 14 symbols/slot and 2 ⁇ slots/subframe.
  • the subcarrier spacing and symbol length/duration are a function of the numerology.
  • the subcarrier spacing may be equal to 2 ⁇ ⁇ 15 kHz, where ⁇ is the numerology 0 to 5.
  • the symbol length/duration is inversely related to the subcarrier spacing.
  • the slot duration is 0.25 ms
  • the subcarrier spacing is 60 kHz
  • the symbol duration is approximately 16.67 ⁇ s.
  • a resource grid may be used to represent the frame structure.
  • Each time slot includes a resource block (RB) (also referred to as physical RBs (PRBs) ) that extends, for example, 12 consecutive subcarriers.
  • RB resource block
  • PRBs physical RBs
  • the resource grid is divided into multiple resource elements (REs) . The number of bits carried by each RE depends on the modulation scheme.
  • some of the REs carry reference (pilot) signals (RS) for a UE (e.g., UE 104 of FIGS. 1 and 3) .
  • the RS may include demodulation RS (DMRS) and/or channel state information reference signals (CSI-RS) for channel estimation at the UE.
  • DMRS demodulation RS
  • CSI-RS channel state information reference signals
  • the RS may also include beam measurement RS (BRS) , beam refinement RS (BRRS) , and/or phase tracking RS (PT-RS) .
  • BRS beam measurement RS
  • BRRS beam refinement RS
  • PT-RS phase tracking RS
  • FIG. 4B illustrates an example of various DL channels within a subframe of a frame.
  • the physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs) , each CCE including, for example, nine RE groups (REGs) , each REG including, for example, four consecutive REs in an OFDM symbol.
  • CCEs control channel elements
  • REGs RE groups
  • a primary synchronization signal may be within symbol 2 of particular subframes of a frame.
  • the PSS is used by a UE (e.g., 104 of FIGS. 1 and 3) to determine subframe/symbol timing and a physical layer identity.
  • a secondary synchronization signal may be within symbol 4 of particular subframes of a frame.
  • the SSS is used by a UE to determine a physical layer cell identity group number and radio frame timing.
  • the UE can determine a physical cell identifier (PCI) . Based on the PCI, the UE can determine the locations of the aforementioned DMRS.
  • the physical broadcast channel (PBCH) which carries a master information block (MIB) , may be logically grouped with the PSS and SSS to form a synchronization signal (SS) /PBCH block.
  • the MIB provides a number of RBs in the system bandwidth and a system frame number (SFN) .
  • the physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH such as system information blocks (SIBs) , and/or paging messages.
  • SIBs system information blocks
  • some of the REs carry DMRS (indicated as R for one particular configuration, but other DMRS configurations are possible) for channel estimation at the base station.
  • the UE may transmit DMRS for the PUCCH and DMRS for the PUSCH.
  • the PUSCH DMRS may be transmitted, for example, in the first one or two symbols of the PUSCH.
  • the PUCCH DMRS may be transmitted in different configurations depending on whether short or long PUCCHs are transmitted and depending on the particular PUCCH format used.
  • UE 104 may transmit sounding reference signals (SRS) .
  • the SRS may be transmitted, for example, in the last symbol of a subframe.
  • the SRS may have a comb structure, and a UE may transmit SRS on one of the combs.
  • the SRS may be used by a base station for channel quality estimation to enable frequency-dependent scheduling on the UL.
  • FIG. 4D illustrates an example of various UL channels within a subframe of a frame.
  • the PUCCH may be located as indicated in one configuration.
  • the PUCCH carries uplink control information (UCI) , such as scheduling requests, a channel quality indicator (CQI) , a precoding matrix indicator (PMI) , a rank indicator (RI) , and HARQ ACK/NACK feedback.
  • UCI uplink control information
  • the PUSCH carries data, and may additionally be used to carry a buffer status report (BSR) , a power headroom report (PHR) , and/or UCI.
  • BSR buffer status report
  • PHR power headroom report
  • a unified TCI state may indicate a common beam applicable to multiple DL/UL channels.
  • a unified TCI state may be applied for a CSI-RS, a CORESET, and a PDSCH.
  • a common beam may also be applied for uplink channels/signals, e.g., a PUSCH, a dedicated PUCCH, and an SRS, depending on how the UE is configured
  • unified TCI types may include:
  • Type 1 Joint downlink (DL) /UL common TCI state to indicate a common beam; for at least one DL channel/reference signal (RS_plus at least one UL channel/RS
  • Type 2 Separate DL common TCI state to indicate a common beam for more than one DL channel/RS;
  • Type 3 Separate UL common TCI state to indicate a common beam for more than one UL channel/RS;
  • Type 4 Separate DL single channel/RS TCI state to indicate a beam for a single DL channel/RS
  • Type 5 Separate UL single channel/RS TCI state to indicate a beam for a single UL channel/RS.
  • multi-TRP multi transmission reception point
  • single-DCI single downlink control information
  • multi-TRP transmissions are configured based on multiple DCIs (multi-DCI) .
  • a single DCI (transmitted via a physical downlink control channel (PDCCH) from a first TRP (e.g., TRP 1) schedules a physical downlink shared channel (PDSCH) (e.g., PDSCH layer 1) from the first TRP and a PDSCH (e.g., PDSCH layer 2) from a second TRP (e.g., TRP 2) .
  • PDSCH physical downlink shared channel
  • TRP 2 e.g., TRP 2
  • the multi-TRP operation configured based on the single DCI communication is suited for deployments with an ideal backhaul or a backhaul with a small delay, and involves various transmission schemes.
  • the transmissions schemes may include, for example, a spatial division multiplexing (SDM) scheme, a frequency division multiplexing (FDM) scheme, and/or a time division multiplexing (TDM) scheme.
  • a first set of layers are transmitted from the first TRP and a second set of layers are transmitted from the second TRP.
  • These transmissions utilize a same frequency domain resource allocation (FDRA) and a time domain resource allocation (TDRA) .
  • transmissions from the first TRP and the second TRP have a same rank and a same code word (CW) , but with different FDRAs across the first TRP and the second TRP.
  • CW code word
  • transmissions from the first TRP and the second TRP have a same rank and a same CW, but with different TDRAs across the first TRP and the second TRP.
  • the PDSCH to a user equipment is sent in multiple parts.
  • the first TRP may send a first part of the PDSCH (e.g., on the first set of layers with a first set of FDRA and a first set of TDRA) to the UE and the second TRP may send a second part of the PDSCH (e.g., on a second set of layers with a second set of FDRA and a second set of TDRA) to the UE.
  • each DCI schedules an individual PDSCH in a multi-TRP multi-DCI scenario.
  • a first DCI e.g., DCI 1 from a first TRP (e.g., TRP 1) (e.g., transmitted in a first PDCCH) may schedule a first PSDCH (e.g., PDSCH 1) from the first TRP
  • a second DCI e.g., DCI 2 from a second TRP (e.g., TRP 2)
  • TRP 2 e.g., transmitted in a second PDCCH
  • the two scheduled PDSCHs may be overlapped, non-overlapped, or partially overlapped in a frequency domain or a time domain.
  • rules may be provided for determination of a default beam for receiving aperiodic channel state information (CSI) reference signals (RSs) , when a scheduling offset is less than a threshold (e.g., “beamSwitchTiming” ) .
  • the rules may depend on an operation mode of a wireless communication system (e.g., a multi downlink control information (multi-DCI) multi transmission reception point (multi-TRP) mode, a single DCI (single-DCI) multi-TRP mode, or a single-TRP mode) .
  • the rules may depend on whether there is an overlap of the aperiodic CSI-RSs with other downlink (DL) signals at same symbols.
  • a first parameter e.g., “enableDefaultTCIStatePerCoresetPoolInd”
  • a second parameter e.g., “enableTwoDefaultTCIState”
  • a single-DCI multi-TRP mode is used for determination of the default beam for receiving the aperiodic CSI-RSs.
  • a scheduling time offset between a last symbol of a physical downlink control channel (PDCCH) carrying a triggering DCI and a first symbol of aperiodic CSI-RS resources in a non-zero power (NZP) CSI-RS resource set configured without a higher layer parameter (e.g., tracking reference signal information (trs-Info) ) is smaller than a user equipment (UE) reported threshold time offset (e.g., “beamSwitchTiming” )
  • the UE may have insufficient time to decode the DCI and determine a proper beam for a reception of CSI-RSs to change a receiver beam for the reception of the aperiodic CSI-RS.
  • the UE needs to buffer time-domain samples with a default receiver beam where specific rules (e.g., for determination of a default beam for receiving aperiodic CSI-RSs) are implemented at least when a first parameter is configured for both overlapping and non-overlapping DL signals.
  • the rules are implemented for a single-TRP for both overlapping and non-overlapping DL signals.
  • the rules are implemented at least when a default beam for a cross carrier scheduling (e.g., “enableDefaultBeamForCCS” ) is configured.
  • the threshold time offset includes a beam switching timing parameter reported to a base station (BS) as a capability of the UE.
  • SFN single frequency network
  • a same PDCCH is simultaneously transmitted from both TRPs such as a first TRP (e.g., TRP 1) and a second TRP (e.g., TRP 2) on same time and frequency resources.
  • TRPs such as a first TRP (e.g., TRP 1) and a second TRP (e.g., TRP 2) on same time and frequency resources.
  • This improves PDCCH reliability (e.g. a high mobility in a high speed train (HST) wireless communication system, a blockage, etc. ) .
  • HST high speed train
  • a PDCCH transmission mode and a PDSCH transmission mode may not be the same.
  • a control resource set (CORESET) is configured via radio resource control (RRC) signaling with a new higher layer parameter to indicate that a DCI/PDCCH received on the CORESET is a SFN.
  • RRC radio resource control
  • CJT Coherent Joint Transmission
  • NCJT Non-Coherent Joint Transmission
  • CJT and NCJT are two different techniques used in wireless communication systems.
  • CJT is a technique in which a transmitter and receiver use the same carrier frequency and are synchronized in both time and phase.
  • the transmitter may send a modulated signal, which is received by the receiver, and the receiver demodulates the signal to recover the original data.
  • NCJT is a technique in which the transmitter and receiver do not use the same carrier frequency and are not synchronized in time or phase. Instead, the receiver uses a correlation detector to detect the presence of a signal, which is then demodulated to recover the original data.
  • CJT relies on synchronization and carrier frequency coherence to transmit and receive data, while NCJT does not require synchronization or carrier frequency coherence.
  • FIG. 8 depicts example scenarios 800 for spatial division multiplexed (SDM) based non-coherent joint transmission (NCJT) , in which data is precoded separately on different TRPs.
  • FIG. 8 also depicts example CJT, in which data is precoded in a fully-joint way.
  • data may be precoded with separate precoder with co-phase and amplitude coefficients. It is also possible that the co-phase/-amplitude is implicitly accommodated into the precoder (e.g., such that the equation can appear with no difference from the NCJT case) .
  • Port diagrams for a NCJT, a first option of a CJT, and a second option of a CJT are also depicted in example CJT and NCJT scenarios 900 of FIG. 9.
  • the unified TCI framework may be extended to multiple TRP (mTRP) operation.
  • different TCI states may be applied for transmissions to the different TRPs.
  • a UE may be configured with first and second unified TCI states.
  • TRP TRP
  • scenario 1000 of FIG. 10 depicts a multi-TRP scenario in which a UE communicates with a first TRP (TRP A) using a first TCI state and with a second TRP (TRP B) using a second TCI state.
  • TDM time division multiplexing
  • the TRPs may use TDM with cyclic mapping or sequential mapping.
  • FIG. 11 illustrates an example of how a single DCI (S-DCI) for multi-TRP PDSCH may be used for different multiplexing modes. These modes may include spatial division multiplexing (SDM) , where overlapping time/frequency resources may be used to communicate with different TRPs but with spatial filtering, frequency division multiplexing (FDM) , in which different frequency resources are used to communicate with different TRPs, or TDM, in which different time resources are used to communicate with different TRPs.
  • SDM spatial division multiplexing
  • FDM frequency division multiplexing
  • FIG. 11 also illustrates that a multiple DCI (mDCI) for multi-TRP PDSCH may indicate different resources, which may include resources for demodulation reference signals (DMRS) .
  • DMRS demodulation reference signals
  • FIG. 12A illustrates how TDM may be used for physical uplink control channel (PUCCH) repetition.
  • FIG. 12B further illustrates how a single frequency network (SFN) may use SDM for physical uplink shared channel (PUSCH) and/or PUCCH transmissions.
  • SFN single frequency network
  • a QCL-Info field/parameter may be absent (e.g., in CSI-AssociatedReportConfigInfo of CSI-AperiodicTriggerState) for an aperiodic CSI-RS resource set configured for CSI or broadcast-multicast (BM) .
  • certain aspects include techniques for providing (e.g., RRC) configuration (e.g., in CSI-AssociatedReportConfigInfo of CSI-AperiodicTriggerState) for the aperiodic CSI-RS resource set to inform the UE to apply the first or the second indicated joint/DL TCI state to the aperiodic CSI-RS resource set.
  • RRC Radio Resource Control
  • aspects of the present disclosure relate to a unified transmission configuration indicator (TCI) framework for indication of multiple downlink (DL) and uplink (UL) TCI states, which may be especially useful in mTRP scenarios.
  • Certain aspects of the present disclosure provide techniques for unified TCI indication for channel state information (CSI) reference signals (RS) configured for noncoherent joint transmission (NCJT) and sounding RS (SRS) for mTRP operation.
  • CSI channel state information
  • RS reference signals
  • NCJT noncoherent joint transmission
  • SRS sounding RS
  • one CSI resource set may be configured with two resource groups, which may be intended for different transmission reception point (TRPs) .
  • TRPs transmission reception point
  • aspects of the present disclosure provide techniques for applying the two indicated unified TCI states to the two groups in a CSI resource set.
  • two SRS resource sets may be configured for different TRPs.
  • aspects of the present disclosure provide techniques for applying the two indicated unified TCI states to the two SRS sets.
  • FIG. 13 depicts a call flow diagram 1300 for processing CSI-RS in an mTRP scenario, in accordance with certain aspects of the present disclosure.
  • the UE shown in FIG. 13 may be an example of the UE 104 depicted and described with respect to FIG. 1 and 3.
  • the network entity shown in FIG. 13 may be an example of the BS 102 (e.g., a gNB) depicted and described with respect to FIG. 1 and 3 or a disaggregated base station depicted and described with respect to FIG. 2.
  • the network entity configures the UE for NCJT CSI reporting with at least first and second CSI-RS resources. As illustrated at 1304, the network entity indicates at least two unified TCI states to the UE.
  • the network entity may transmit CSI-RSs to the UE (e.g., with different TRPs transmitting on different CSI-RS resources.
  • the UE may then generate CSI by applying a first of the unified TCI states to the first CSI-RS resource and a second of the unified TCI states to the second CSI-RS resource.
  • applying the first and second unified TCI states may mean, for example, setting receiver spatial filtering (e.g., beam forming) parameters, based on the first and second unified TCI states, for receiving the CSI-RS.
  • applying the first and second unified TCI states may mean, for example, setting transmit spatial filtering (e.g., beam forming) parameters, based on the first and second unified TCI states, for transmitting the CSI-RS.
  • the UE may then transmit a report conveying the CSI.
  • the UE may receive a separate indication to apply the first or the second indicated joint/DL TCI state per resource group (e.g., two indications per CSI resource set) .
  • each resource group may be separately configured to follow unified TCI, and separately indicated to apply an indicated TCI.
  • the UE may be indicated with “followUnifiedTCI” , and “followFirstIndicatedTCI” or “followSecondIndicatedTCI” .
  • the UE may receive a single indication to apply both the indicated joint/DL TCI states for two resource groups (i.e., a single indication for each CSI resource set) .
  • the mapping order between two TCI states and two groups may be configured or may be based on a default rule. For example, for each CSI resource set (e.g., periodic, semi-persistent and/or aperiodic CSI-RS resource set configured for NCJT) , the UE can be indicated with “followUnifiedTCI” , and “followBothIndicatedTCIs” .
  • the UE may receive an RRC configuration for each CSI-RS resource set or for each CSI-RS resource in each aperiodic CSI-RS resource set (e.g., in CSI-AssociatedReportConfigInfo of CSI-AperiodicTriggerState) , which indicates that the UE may apply the first or the second indicated TCI state to the CSI-RS resource if the aperiodic CSI-RS resource set for CSI acquisition or beam management is configured to follow a unified TCI state, and at least if the offset between the last symbol of the PDCCH carrying the triggering DCI and the first symbol of the aperiodic CSI-RS resources in the aperiodic CSI-RS resource set is equal to or larger than a threshold.
  • a threshold e.g., in CSI-AssociatedReportConfigInfo of CSI-AperiodicTriggerState
  • the UE may apply the first indicated TCI state to the CSI-RS resource (s) in the first group and the second indicated state to the CSI-RS resource (s) in the second.
  • the UE may report a UE capability to indicate whether the RRC configuration can be per CSI-RS resource set or per CSI-RS resource.
  • FIG. 14 depicts a call flow diagram 1400 for processing SRS in an mTRP scenario, in accordance with certain aspects of the present disclosure.
  • the network entity may configure a UE for NCJT SRS transmission with at least first and second SRS resources.
  • the network entity may indicate at least two unified TCI states to the UE.
  • the UE may transmit SRS by applying a first of the unified TCI states when transmitting SRS on the first SRS resource and by applying a second of the unified TCI states when transmitting SRS on the second SRS resource.
  • applying the first and second unified TCI states may mean, for example, setting transmitter spatial filtering (e.g., beam forming) parameters, based on the first and second unified TCI states, for transmitting the SRS.
  • applying the first and second unified TCI states may mean, for example, setting transmitter spatial filtering (e.g., beam forming) parameters, based on the first and second unified TCI states, for receiving the SRS.
  • the UE may receive a separate indication to apply the first or the second indicated joint/uplink TCI state per SRS set.
  • SRS resource sets configured for NonCodeBook (NCB) based MIMO, Codebook (CB) based MIMO, antenna selection (AS) , and/or beam management (BM) operations.
  • NCB NonCodeBook
  • CB Codebook
  • AS antenna selection
  • BM beam management
  • the UE may apply the first indicated joint/UL TCI state to the first SRS resource set for CB/NCB (e.g., the one with lower resource set ID) and the second indicated joint/UL TCI state to second SRS resource set (e.g., the one with higher resource set ID) for CB/NCB.
  • first SRS resource set for CB/NCB e.g., the one with lower resource set ID
  • second SRS resource set e.g., the one with higher resource set ID
  • the UE may receive an indication to apply the indicated joint/UL TCI state specific to a CORESET pool for an SRS set. For example, the UE may be indicated to apply the indicated joint/UL TCI state specific to CORESET pool index 0 to the first SRS set, and the indicated joint/UL TCI state specific to CORESET pool index 1 to the second SRS set. This may be applied for SRS resource sets configured for NCB, CB, AS, and/or BM operations.
  • the UE may apply the indicated joint/DL TCI state specific to CORESET pool index 0 to the first SRS set (e.g., the one with lower resource set ID) , and the indicated joint/UL TCI state specific to CORESET pool index 1 to the second SRS set (e.g., the one with higher resource set ID) .
  • FIG. 15 shows an example of a method 1500 of wireless communications at a user equipment (UE) , such as a UE 104 of FIGS. 1 and 3.
  • UE user equipment
  • Method 1500 begins at step 1505 with receiving first signaling configuring the UE for non-coherent joint transmission (NCJT) channel state information (CSI) reporting with at least first and second CSI reference signal (CSI-RS) resources.
  • NJT non-coherent joint transmission
  • CSI-RS channel state information
  • the operations of this step refer to, or may be performed by, circuitry for receiving and/or code for receiving as described with reference to FIG. 19.
  • Method 1500 then proceeds to step 1510 with receiving second signaling that indicates at least two unified Transmission Configuration Indicator (TCI) states.
  • TCI Transmission Configuration Indicator
  • the operations of this step refer to, or may be performed by, circuitry for receiving and/or code for receiving as described with reference to FIG. 19.
  • Method 1500 then proceeds to step 1515 with generating CSI by applying a first of the unified TCI states to the first CSI-RS resource and by applying a second of the unified TCI states to the second CSI-RS resource.
  • the operations of this step refer to, or may be performed by, circuitry for generating and/or code for generating as described with reference to FIG. 19.
  • Method 1500 then proceeds to step 1520 with transmitting a report conveying the CSI.
  • the operations of this step refer to, or may be performed by, circuitry for transmitting and/or code for transmitting as described with reference to FIG. 19.
  • the first and second CSI-RS resources comprise first and second CSI-RS resource groups within a CSI-RS resource set.
  • the method 1500 further includes determining which of the at least two TCI states to apply to the first CSI-RS resource group and to the second CSI-RS resource group based on separate indications.
  • the operations of this step refer to, or may be performed by, circuitry for determining and/or code for determining as described with reference to FIG. 19.
  • the first signaling separately configures the first CSI-RS resource group and the second CSI-RS resource group for application of unified TCI; and provides the separate indications indicating which of the at least two TCI states to apply to the first CSI-RS resource group and the second CSI-RS resource group.
  • the method 1500 further includes determining which of the at least two TCI states to apply to the first CSI-RS resource group and to the second CSI-RS resource group based on a single indication for the CSI-RS resource set.
  • the operations of this step refer to, or may be performed by, circuitry for determining and/or code for determining as described with reference to FIG. 19.
  • the determination is further based on at least one of a rule or a configuration for the CSI-RS resource set.
  • the method 1500 further includes determining which of the at least two TCI states to apply to the first CSI-RS resource group and to the second CSI- RS resource group based on a default rule.
  • the operations of this step refer to, or may be performed by, circuitry for determining and/or code for determining as described with reference to FIG. 19.
  • method 1500 may be performed by an apparatus, such as communications device 1900 of FIG. 19, which includes various components operable, configured, or adapted to perform the method 1500.
  • Communications device 1900 is described below in further detail.
  • FIG. 15 is just one example of a method, and other methods including fewer, additional, or alternative steps are possible consistent with this disclosure.
  • FIG. 16 shows an example of a method 1600 of wireless communications at a network entity, such as a BS 102 of FIGS. 1 and 3, or a disaggregated base station as discussed with respect to FIG. 2.
  • a network entity such as a BS 102 of FIGS. 1 and 3, or a disaggregated base station as discussed with respect to FIG. 2.
  • Method 1600 begins at step 1605 with transmitting first signaling configuring a user equipment (UE) for non-coherent joint transmission (NCJT) channel state information (CSI) reporting with at least first and second CSI reference signal (CSI-RS) resources.
  • UE user equipment
  • NJT non-coherent joint transmission
  • CSI-RS channel state information
  • the operations of this step refer to, or may be performed by, circuitry for transmitting and/or code for transmitting as described with reference to FIG. 19.
  • Method 1600 then proceeds to step 1610 with transmitting second signaling that indicates at least two unified Transmission Configuration Indicator (TCI) states.
  • TCI Transmission Configuration Indicator
  • the operations of this step refer to, or may be performed by, circuitry for transmitting and/or code for transmitting as described with reference to FIG. 19.
  • Method 1600 then proceeds to step 1615 with receiving a report conveying CSI generated by the UE, based on CSI-RS transmitted in accordance with the second signaling.
  • the operations of this step refer to, or may be performed by, circuitry for receiving and/or code for receiving as described with reference to FIG. 19.
  • the first and second CSI-RS resources comprise first and second CSI-RS resource groups within a CSI-RS resource set.
  • the first signaling separately configures the first CSI-RS resource group and the second CSI-RS resource group for application of unified TCI; and provides separate indications indicating which of the at least two TCI states to apply to the first CSI-RS resource group and the second CSI-RS resource group.
  • method 1600 may be performed by an apparatus, such as communications device 1900 of FIG. 19, which includes various components operable, configured, or adapted to perform the method 1600.
  • Communications device 1900 is described below in further detail.
  • FIG. 16 is just one example of a method, and other methods including fewer, additional, or alternative steps are possible consistent with this disclosure.
  • FIG. 17 shows an example of a method 1700 of wireless communications at a user equipment (UE) , such as a UE 104 of FIGS. 1 and 3.
  • UE user equipment
  • Method 1700 begins at step 1705 with receiving first signaling configuring the UE for non-coherent joint transmission (NCJT) sounding reference signal (SRS) transmission with at least first and second SRS resources.
  • NJT non-coherent joint transmission
  • SRS sounding reference signal
  • the operations of this step refer to, or may be performed by, circuitry for receiving and/or code for receiving as described with reference to FIG. 19.
  • Method 1700 then proceeds to step 1710 with receiving second signaling that indicates at least two unified Transmission Configuration Indicator (TCI) states.
  • TCI Transmission Configuration Indicator
  • the operations of this step refer to, or may be performed by, circuitry for receiving and/or code for receiving as described with reference to FIG. 19.
  • Method 1700 then proceeds to step 1715 with transmitting SRS by applying a first of the unified TCI states when transmitting SRS on the first SRS resource and by applying a second of the unified TCI states when transmitting SRS on the second SRS resource.
  • the operations of this step refer to, or may be performed by, circuitry for transmitting and/or code for transmitting as described with reference to FIG. 19.
  • the first and second SRS resources comprise first and second SRS resource sets.
  • the SRS resource sets are configured for at least one of: codebook (CB) based transmission, non-codebook (NCB) based transmission, antenna selection, or beam management (BM) .
  • CB codebook
  • NCB non-codebook
  • BM beam management
  • the UE is configured for multiple transmitter receiver point (mTRP) transmission based on a single downlink control information (sDCI) .
  • mTRP transmitter receiver point
  • sDCI single downlink control information
  • the method 1700 further includes determining which of the at least two TCI states to apply to the first SRS resource set and to the second SRS resource set based on separate indications.
  • the operations of this step refer to, or may be performed by, circuitry for determining and/or code for determining as described with reference to FIG. 19.
  • the method 1700 further includes determining which of the at least two TCI states to apply to the first SRS resource set and to the second SRS resource set based on resource set IDs of the first and second SRS resource sets.
  • the operations of this step refer to, or may be performed by, circuitry for determining and/or code for determining as described with reference to FIG. 19.
  • the UE is configured for multiple transmitter receiver point (mTRP) transmission based on multiple downlink control informations (mDCI) .
  • mTRP transmitter receiver point
  • mDCI downlink control informations
  • the method 1700 further includes determining which of the at least two TCI states to apply to the first SRS resource set and to the second SRS resource set based on control resource set (CORESET) pool indexes for the first and second SRS resource set.
  • CORESET control resource set
  • the operations of this step refer to, or may be performed by, circuitry for determining and/or code for determining as described with reference to FIG. 19.
  • the determination is further based on resource set IDs of the first and second SRS resource sets.
  • method 1700 may be performed by an apparatus, such as communications device 1900 of FIG. 19, which includes various components operable, configured, or adapted to perform the method 1700.
  • Communications device 1900 is described below in further detail.
  • FIG. 17 is just one example of a method, and other methods including fewer, additional, or alternative steps are possible consistent with this disclosure.
  • FIG. 18 shows an example of a method 1800 of wireless communications at a network entity, such as a BS 102 of FIGS. 1 and 3, or a disaggregated base station as discussed with respect to FIG. 2.
  • a network entity such as a BS 102 of FIGS. 1 and 3, or a disaggregated base station as discussed with respect to FIG. 2.
  • Method 1800 begins at step 1805 with transmitting first signaling configuring a user equipment (UE) for non-coherent joint transmission (NCJT) sounding reference signal (SRS) transmission with at least first and second SRS resources.
  • UE user equipment
  • NJT non-coherent joint transmission
  • SRS sounding reference signal
  • the operations of this step refer to, or may be performed by, circuitry for transmitting and/or code for transmitting as described with reference to FIG. 19.
  • Method 1800 then proceeds to step 1810 with transmitting second signaling that indicates at least two unified Transmission Configuration Indicator (TCI) states.
  • TCI Transmission Configuration Indicator
  • the operations of this step refer to, or may be performed by, circuitry for transmitting and/or code for transmitting as described with reference to FIG. 19.
  • Method 1800 then proceeds to step 1815 with receiving SRS by applying a first of the unified TCI states when receiving SRS on the first SRS resource and by applying a second of the unified TCI states when receiving SRS on the second SRS resource.
  • the operations of this step refer to, or may be performed by, circuitry for receiving and/or code for receiving as described with reference to FIG. 19.
  • the first and second SRS resources comprise first and second SRS resource sets.
  • the SRS resource sets are configured for at least one of: codebook (CB) based transmission, non-codebook (NCB) based transmission, antenna selection, or beam management (BM) .
  • CB codebook
  • NCB non-codebook
  • BM beam management
  • the UE is configured for multiple transmitter receiver point (mTRP) transmission based on a single downlink control information (sDCI) .
  • mTRP transmitter receiver point
  • sDCI single downlink control information
  • applying a first of the unified TCI states when receiving SRS on the first SRS resource and applying a second of the unified TCI states when receiving SRS on the second SRS resource is based on resource set IDs of the first and second SRS resource sets.
  • the UE is configured for multiple transmitter receiver point (mTRP) transmission based on multiple downlink control informations (mDCI) .
  • mTRP transmitter receiver point
  • mDCI downlink control informations
  • applying a first of the unified TCI states when receiving SRS on the first SRS resource and applying a second of the unified TCI states when receiving SRS on the second SRS resource is based on at least one of: control resource set (CORESET) pool indexes for the first and second SRS resource set, or resource set IDs of the first and second SRS resource sets.
  • CORESET control resource set
  • method 1800 may be performed by an apparatus, such as communications device 1900 of FIG. 19, which includes various components operable, configured, or adapted to perform the method 1800.
  • Communications device 1900 is described below in further detail.
  • FIG. 18 is just one example of a method, and other methods including fewer, additional, or alternative steps are possible consistent with this disclosure.
  • FIG. 19 depicts aspects of an example communications device 1900.
  • communications device 1900 is a user equipment, such as UE 104 described above with respect to FIGS. 1 and 3.
  • communications device 1900 is a network entity, such as BS 102 of FIGS. 1 and 3, or a disaggregated base station as discussed with respect to FIG. 2.
  • the communications device 1900 includes a processing system 1905 coupled to the transceiver 1965 (e.g., a transmitter and/or a receiver) .
  • processing system 1905 may be coupled to a network interface 1975 that is configured to obtain and send signals for the communications device 1900 via communication link (s) , such as a backhaul link, midhaul link, and/or fronthaul link as described herein, such as with respect to FIG. 2.
  • the transceiver 1965 is configured to transmit and receive signals for the communications device 1900 via the antenna 1970, such as the various signals as described herein.
  • the processing system 1905 may be configured to perform processing functions for the communications device 1900, including processing signals received and/or to be transmitted by the communications device 1900.
  • the processing system 1905 includes one or more processors 1910.
  • the one or more processors 1910 may be representative of one or more of receive processor 358, transmit processor 364, TX MIMO processor 366, and/or controller/processor 380, as described with respect to FIG. 3.
  • one or more processors 1910 may be representative of one or more of receive processor 338, transmit processor 320, TX MIMO processor 330, and/or controller/processor 340, as described with respect to FIG. 3.
  • the one or more processors 1910 are coupled to a computer-readable medium/memory 1935 via a bus 1960.
  • the computer-readable medium/memory 1935 is configured to store instructions (e.g., computer-executable code) that when executed by the one or more processors 1910, cause the one or more processors 1910 to perform the method 1500 described with respect to FIG. 15, or any aspect related to it; the method 1600 described with respect to FIG. 16, or any aspect related to it; the method 1700 described with respect to FIG. 17, or any aspect related to it; and the method 1800 described with respect to FIG. 18, or any aspect related to it.
  • instructions e.g., computer-executable code
  • computer-readable medium/memory 1935 stores code (e.g., executable instructions) , such as code for receiving 1940, code for generating 1945, code for transmitting 1950, and code for determining 1955.
  • code for receiving 1940, code for generating 1945, code for transmitting 1950, and code for determining 1955 may cause the communications device 1900 to perform the method 1500 described with respect to FIG. 15, or any aspect related to it; the method 1600 described with respect to FIG. 16, or any aspect related to it; the method 1700 described with respect to FIG. 17, or any aspect related to it; and the method 1800 described with respect to FIG. 18, or any aspect related to it.
  • the one or more processors 1910 include circuitry configured to implement (e.g., execute) the code stored in the computer-readable medium/memory 1935, including circuitry for receiving 1915, circuitry for generating 1920, circuitry for transmitting 1925, and circuitry for determining 1930. Processing with circuitry for receiving 1915, circuitry for generating 1920, circuitry for transmitting 1925, and circuitry for determining 1930 may cause the communications device 1900 to perform the method 1500 described with respect to FIG. 15, or any aspect related to it; the method 1600 described with respect to FIG. 16, or any aspect related to it; the method 1700 described with respect to FIG. 17, or any aspect related to it; and the method 1800 described with respect to FIG. 18, or any aspect related to it.
  • Various components of the communications device 1900 may provide means for performing the method 1500 described with respect to FIG. 15, or any aspect related to it; the method 1600 described with respect to FIG. 16, or any aspect related to it; the method 1700 described with respect to FIG. 17, or any aspect related to it; and the method 1800 described with respect to FIG. 18, or any aspect related to it.
  • means for transmitting, sending or outputting for transmission may include transceivers 354 and/or antenna (s) 352 of the UE 104 illustrated in FIG. 3, transceivers 332 and/or antenna (s) 334 of the BS 102 illustrated in FIG. 3, and/or the transceiver 1965 and the antenna 1970 of the communications device 1900 in FIG. 19.
  • Means for receiving or obtaining may include transceivers 354 and/or antenna (s) 352 of the UE 104 illustrated in FIG. 3, transceivers 332 and/or antenna (s) 334 of the BS 102 illustrated in FIG. 3, and/or the transceiver 1965 and the antenna 1970 of the communications device 1900 in FIG. 19.
  • a method for wireless communications at a user equipment comprising: receiving first signaling configuring the UE for non-coherent joint transmission (NCJT) channel state information (CSI) reporting with at least first and second CSI reference signal (CSI-RS) resources; receiving second signaling that indicates at least two unified Transmission Configuration Indicator (TCI) states; generating CSI by applying a first of the unified TCI states to the first CSI-RS resource and by applying a second of the unified TCI states to the second CSI-RS resource; and transmitting a report conveying the CSI.
  • NCI non-coherent joint transmission
  • CSI-RS channel state information
  • TCI Transmission Configuration Indicator
  • Clause 2 The method of Clause 1, wherein the first and second CSI-RS resources comprise first and second CSI-RS resource groups within a CSI-RS resource set.
  • Clause 3 The method of Clause 2, further comprising determining which of the at least two TCI states to apply to the first CSI-RS resource group and to the second CSI-RS resource group based on separate indications.
  • Clause 4 The method of Clause 3, wherein the first signaling: separately configures the first CSI-RS resource group and the second CSI-RS resource group for application of unified TCI; and provides the separate indications indicating which of the at least two TCI states to apply to the first CSI-RS resource group and the second CSI-RS resource group.
  • Clause 5 The method of Clause 2, further comprising determining which of the at least two TCI states to apply to the first CSI-RS resource group and to the second CSI-RS resource group based on a single indication for the CSI-RS resource set.
  • Clause 6 The method of Clause 5, wherein the determination is further based on at least one of a rule or a configuration for the CSI-RS resource set.
  • Clause 7 The method of Clause 2, further comprising determining which of the at least two TCI states to apply to the first CSI-RS resource group and to the second CSI-RS resource group based on a default rule.
  • a method for wireless communications at a network entity comprising: transmitting first signaling configuring a user equipment (UE) for non-coherent joint transmission (NCJT) channel state information (CSI) reporting with at least first and second CSI reference signal (CSI-RS) resources; transmitting second signaling that indicates at least two unified Transmission Configuration Indicator (TCI) states; and receiving a report conveying CSI generated by the UE, based on CSI-RS transmitted in accordance with the second signaling.
  • NJT non-coherent joint transmission
  • CSI-RS channel state information reporting with at least first and second CSI reference signal (CSI-RS) resources
  • TCI Transmission Configuration Indicator
  • Clause 9 The method of Clause 8, wherein the first and second CSI-RS resources comprise first and second CSI-RS resource groups within a CSI-RS resource set.
  • Clause 10 The method of Clause 9, wherein the first signaling: separately configures the first CSI-RS resource group and the second CSI-RS resource group for application of unified TCI; and provides separate indications indicating which of the at least two TCI states to apply to the first CSI-RS resource group and the second CSI-RS resource group.
  • a method for wireless communications at a user equipment comprising: receiving first signaling configuring the UE for non-coherent joint transmission (NCJT) sounding reference signal (SRS) transmission with at least first and second SRS resources; receiving second signaling that indicates at least two unified Transmission Configuration Indicator (TCI) states; and transmitting SRS by applying a first of the unified TCI states when transmitting SRS on the first SRS resource and by applying a second of the unified TCI states when transmitting SRS on the second SRS resource.
  • NJT non-coherent joint transmission
  • SRS sounding reference signal
  • TCI Transmission Configuration Indicator
  • Clause 12 The method of Clause 11, wherein the first and second SRS resources comprise first and second SRS resource sets.
  • Clause 13 The method of Clause 12, wherein the SRS resource sets are configured for at least one of: codebook (CB) based transmission, non-codebook (NCB) based transmission, antenna selection, or beam management (BM) .
  • CB codebook
  • NCB non-codebook
  • BM beam management
  • Clause 14 The method of Clause 12, wherein the UE is configured for multiple transmitter receiver point (mTRP) transmission based on a single downlink control information (sDCI) .
  • mTRP transmitter receiver point
  • sDCI single downlink control information
  • Clause 15 The method of Clause 14, further comprising determining which of the at least two TCI states to apply to the first SRS resource set and to the second SRS resource set based on separate indications.
  • Clause 16 The method of Clause 14, further comprising determining which of the at least two TCI states to apply to the first SRS resource set and to the second SRS resource set based on resource set IDs of the first and second SRS resource sets.
  • Clause 17 The method of Clause 12, wherein the UE is configured for multiple transmitter receiver point (mTRP) transmission based on multiple downlink control informations (mDCI) .
  • mTRP transmitter receiver point
  • mDCI downlink control informations
  • Clause 18 The method of Clause 17, further comprising determining which of the at least two TCI states to apply to the first SRS resource set and to the second SRS resource set based on control resource set (CORESET) pool indexes for the first and second SRS resource set.
  • CORESET control resource set
  • Clause 19 The method of Clause 18, wherein the determination is further based on resource set IDs of the first and second SRS resource sets.
  • a method for wireless communications at a network entity comprising: transmitting first signaling configuring a user equipment (UE) for non-coherent joint transmission (NCJT) sounding reference signal (SRS) transmission with at least first and second SRS resources; transmitting second signaling that indicates at least two unified Transmission Configuration Indicator (TCI) states; and receiving SRS by applying a first of the unified TCI states when receiving SRS on the first SRS resource and by applying a second of the unified TCI states when receiving SRS on the second SRS resource.
  • NJT non-coherent joint transmission
  • SRS sounding reference signal
  • TCI Transmission Configuration Indicator
  • Clause 21 The method of Clause 20, wherein the first and second SRS resources comprise first and second SRS resource sets.
  • Clause 22 The method of Clause 21, wherein the SRS resource sets are configured for at least one of: codebook (CB) based transmission, non-codebook (NCB) based transmission, antenna selection, or beam management (BM) .
  • CB codebook
  • NCB non-codebook
  • BM beam management
  • Clause 23 The method of Clause 21, wherein the UE is configured for multiple transmitter receiver point (mTRP) transmission based on a single downlink control information (sDCI) .
  • mTRP transmitter receiver point
  • sDCI single downlink control information
  • Clause 24 The method of Clause 23, wherein applying a first of the unified TCI states when receiving SRS on the first SRS resource and applying a second of the unified TCI states when receiving SRS on the second SRS resource is based on resource set IDs of the first and second SRS resource sets.
  • Clause 25 The method of Clause 21, wherein the UE is configured for multiple transmitter receiver point (mTRP) transmission based on multiple downlink control informations (mDCI) .
  • mTRP transmitter receiver point
  • mDCI downlink control informations
  • Clause 26 The method of Clause 25, wherein applying a first of the unified TCI states when receiving SRS on the first SRS resource and applying a second of the unified TCI states when receiving SRS on the second SRS resource is based on at least one of: control resource set (CORESET) pool indexes for the first and second SRS resource set, or resource set IDs of the first and second SRS resource sets.
  • CORESET control resource set
  • Clause 27 An apparatus, comprising: at least one memory comprising executable instructions; and at least one processor configured to execute the executable instructions and cause the apparatus to perform a method in accordance with any one of Clauses 1-26.
  • Clause 28 An apparatus, comprising means for performing a method in accordance with any one of Clauses 1-26.
  • Clause 29 A non-transitory computer-readable medium comprising executable instructions that, when executed by a processor of an apparatus, cause the apparatus to perform a method in accordance with any one of Clauses 1-26.
  • Clause 30 A computer program product embodied on a computer-readable storage medium comprising code for performing a method in accordance with any one of Clauses 1-26.
  • an apparatus may be implemented or a method may be practiced using any number of the aspects set forth herein.
  • the scope of the disclosure is intended to cover such an apparatus or method that is practiced using other structure, functionality, or structure and functionality in addition to, or other than, the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of a claim.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • PLD programmable logic device
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, a system on a chip (SoC) , or any other such configuration.
  • SoC system on a chip
  • a phrase referring to “at least one of” a list of items refers to any combination of those items, including single members.
  • “at least one of: a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c) .
  • a processor at least one processor or “one or more processors” generally refers to a single processor configured to perform one or multiple operations or multiple processors configured to collectively perform one or more operations. In the case of multiple processors, performance the one or more operations could be divided amongst different processors, though one processor may perform multiple operations, and multiple processors could collectively perform a single operation.
  • a memory, ” “at least one memory” or “one or more memories” generally refers to a single memory configured to store data and/or instructions, multiple memories configured to collectively store data and/or instructions.
  • wireless node may refer to, for example, a network entity or a user equipment (UE) .
  • a network entity may be a base station (e.g., a gNB) or a module (e.g., a CU, DU, and/or RU) of a disaggregated base station.
  • While the present disclosure may describe certain operations as being performed by one type of wireless node, the same or similar operations may also be performed by another type of wireless node.
  • operations performed by a network entity may also (or instead) be performed by a UE.
  • operations performed by a UE may also (or instead) be performed by a network entity.
  • wireless nodes may describe certain types of communications between different types of wireless nodes (e.g., between a network entity and a UE)
  • same or similar types of communications may occur between same types of wireless nodes (e.g., between network entities or between UEs, in a peer-to-peer scenario) .
  • communications may occur in reverse direction relative to what is described (e.g., a UE could transmit a request to a network entity and the network entity transmits a response; OR a network entity could transmit the request to a UE and the UE transmits the response) .
  • determining encompasses a wide variety of actions. For example, “determining” may include calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, a database or another data structure) , ascertaining and the like. Also, “determining” may include receiving (e.g., receiving information) , accessing (e.g., accessing data in a memory) and the like. Also, “determining” may include resolving, selecting, choosing, establishing and the like.
  • the methods disclosed herein comprise one or more actions for achieving the methods.
  • the method actions may be interchanged with one another without departing from the scope of the claims.
  • the order and/or use of specific actions may be modified without departing from the scope of the claims.
  • the various operations of methods described above may be performed by any suitable means capable of performing the corresponding functions.
  • the means may include various hardware and/or software component (s) and/or module (s) , including, but not limited to a circuit, an application specific integrated circuit (ASIC) , or processor.
  • ASIC application specific integrated circuit

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Abstract

Certains aspects de la présente divulgation prévoient des techniques d'indication d'état d'indicateur de configuration de transmission (TCI) unifié. Un procédé donné à titre d'exemple, mis en œuvre au niveau d'un équipement utilisateur (UE), consiste à recevoir une première signalisation configurant l'UE pour un rapport d'informations CSI de transmission conjointe non cohérente (NCJT) avec au moins de premières et secondes ressources de signal de référence d'informations CSI (CSI-RS), à recevoir une seconde signalisation qui indique au moins deux états d'indicateur de configuration de transmission (TCI) unifié, à générer des informations CSI en appliquant un premier des états de TCI unifié à la première ressource CSI-RS et en appliquant un second état de TCI unifié à la seconde ressource CSI-RS, et à transmettre un rapport communiquant les informations CSI.
PCT/CN2024/082924 2023-05-08 2024-03-21 Indication d'état d'indicateur de configuration de transmission unifié Ceased WO2024230331A1 (fr)

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CN202480029406.4A CN121058194A (zh) 2023-05-08 2024-03-21 统一发送配置指示符状态指示

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Citations (4)

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